NDLI: Space shuttle nonmetallic materials age life prediction

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Space shuttle nonmetallic materials age life prediction

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nathan, R. A. Mendenhall, G. D. Hassell, J. A.
Copyright Year	1975
Description	The chemiluminescence from samples of polybutadiene, Viton, Teflon, Silicone, PL 731 Adhesive, and SP 296 Boron-Epoxy composite was measured at temperatures from 25 to 150 C. Excellent correlations were obtained between chemiluminescence and temperature. These correlations serve to validate accelerated aging tests (at elevated temperatures) designed to predict service life at lower temperatures. In most cases, smooth or linear correlations were obtained between chemiluminescence and physical properties of purified polymer gums, including the tensile strength, viscosity, and loss tangent. The latter is a complex function of certain polymer properties. Data were obtained with far greater ease by the chemiluminescence technique than by the conventional methods of study. The chemiluminescence from the Teflon (Halon) samples was discovered to arise from trace amounts of impurities, which were undetectable by conventional, destructive analysis of the sample.
File Size	5031612
Page Count	102
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760011188
Archival Resource Key	ark:/13960/t7mp9t98f
Language	English
Publisher Date	1975-08-01
Access Restriction	Open
Subject Keyword	Nonmetallic Materials Boron-epoxy Composites Space Shuttles Life Durability Predictions Materials Statistical Correlation Chemiluminescence Polybutadiene Viton Rubber Trademark Silicones Teflon Trademark Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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